| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.settings.security.trustagent; |
| |
| import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin; |
| |
| import android.app.admin.DevicePolicyManager; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.graphics.drawable.Drawable; |
| import android.os.UserHandle; |
| import android.service.trust.TrustAgentService; |
| import android.text.TextUtils; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.IconDrawableFactory; |
| |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| import androidx.preference.SwitchPreference; |
| |
| import com.android.internal.widget.LockPatternUtils; |
| import com.android.settings.core.BasePreferenceController; |
| import com.android.settings.overlay.FeatureFactory; |
| import com.android.settings.security.SecurityFeatureProvider; |
| import com.android.settingslib.RestrictedLockUtilsInternal; |
| import com.android.settingslib.RestrictedSwitchPreference; |
| import com.android.settingslib.core.lifecycle.LifecycleObserver; |
| import com.android.settingslib.core.lifecycle.events.OnStart; |
| |
| import java.util.List; |
| |
| public class TrustAgentsPreferenceController extends BasePreferenceController |
| implements Preference.OnPreferenceChangeListener, LifecycleObserver, OnStart { |
| |
| private static final Intent TRUST_AGENT_INTENT = |
| new Intent(TrustAgentService.SERVICE_INTERFACE); |
| |
| private final ArrayMap<ComponentName, TrustAgentInfo> mAvailableAgents; |
| private final ArraySet<ComponentName> mActiveAgents; |
| private final DevicePolicyManager mDevicePolicyManager; |
| private final IconDrawableFactory mIconDrawableFactory; |
| private final LockPatternUtils mLockPatternUtils; |
| private final PackageManager mPackageManager; |
| private final TrustAgentManager mTrustAgentManager; |
| |
| private PreferenceScreen mScreen; |
| |
| public TrustAgentsPreferenceController(Context context, String key) { |
| super(context, key); |
| mAvailableAgents = new ArrayMap<>(); |
| mActiveAgents = new ArraySet<>(); |
| mDevicePolicyManager = context.getSystemService(DevicePolicyManager.class); |
| mIconDrawableFactory = IconDrawableFactory.newInstance(context); |
| final SecurityFeatureProvider securityFeatureProvider = |
| FeatureFactory.getFactory(context).getSecurityFeatureProvider(); |
| mTrustAgentManager = securityFeatureProvider.getTrustAgentManager(); |
| mLockPatternUtils = securityFeatureProvider.getLockPatternUtils(context); |
| mPackageManager = context.getPackageManager(); |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mScreen = screen; |
| } |
| |
| @Override |
| public int getAvailabilityStatus() { |
| return AVAILABLE; |
| } |
| |
| @Override |
| public void onStart() { |
| updateAgents(); |
| } |
| |
| private void updateAgents() { |
| findAvailableTrustAgents(); |
| loadActiveAgents(); |
| removeUselessExistingPreferences(); |
| |
| final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled( |
| mContext, DevicePolicyManager.KEYGUARD_DISABLE_TRUST_AGENTS, UserHandle.myUserId()); |
| |
| for (TrustAgentInfo agent : mAvailableAgents.values()) { |
| final ComponentName componentName = agent.getComponentName(); |
| RestrictedSwitchPreference preference = (RestrictedSwitchPreference) |
| mScreen.findPreference(componentName.flattenToString()); |
| if (preference == null) { |
| preference = new RestrictedSwitchPreference(mScreen.getContext()); |
| } |
| preference.setKey(componentName.flattenToString()); |
| preference.useAdminDisabledSummary(true); |
| preference.setTitle(agent.getLabel()); |
| preference.setIcon(agent.getIcon()); |
| preference.setOnPreferenceChangeListener(this); |
| preference.setChecked(mActiveAgents.contains(componentName)); |
| if (admin != null && mDevicePolicyManager.getTrustAgentConfiguration(null /* admin */, |
| componentName) == null) { |
| preference.setChecked(false); |
| preference.setDisabledByAdmin(admin); |
| } |
| mScreen.addPreference(preference); |
| } |
| } |
| |
| private void loadActiveAgents() { |
| final List<ComponentName> activeTrustAgents = mLockPatternUtils.getEnabledTrustAgents( |
| UserHandle.myUserId()); |
| if (activeTrustAgents != null) { |
| mActiveAgents.addAll(activeTrustAgents); |
| } |
| } |
| |
| private void saveActiveAgents() { |
| mLockPatternUtils.setEnabledTrustAgents(mActiveAgents, UserHandle.myUserId()); |
| } |
| |
| private void findAvailableTrustAgents() { |
| final List<ResolveInfo> resolveInfos = mPackageManager.queryIntentServices( |
| TRUST_AGENT_INTENT, PackageManager.GET_META_DATA); |
| mAvailableAgents.clear(); |
| for (ResolveInfo resolveInfo : resolveInfos) { |
| if (resolveInfo.serviceInfo == null) { |
| continue; |
| } |
| if (!mTrustAgentManager.shouldProvideTrust(resolveInfo, mPackageManager)) { |
| continue; |
| } |
| final CharSequence label = resolveInfo.loadLabel(mPackageManager); |
| final ComponentName componentName = mTrustAgentManager.getComponentName(resolveInfo); |
| final Drawable icon = mIconDrawableFactory.getBadgedIcon( |
| resolveInfo.getComponentInfo().applicationInfo); |
| final TrustAgentInfo agentInfo = new TrustAgentInfo(label, componentName, icon); |
| mAvailableAgents.put(componentName, agentInfo); |
| } |
| } |
| |
| private void removeUselessExistingPreferences() { |
| final int count = mScreen.getPreferenceCount(); |
| if (count <= 0) { |
| return; |
| } |
| for (int i = count - 1; i >= 0; i--) { |
| final Preference pref = mScreen.getPreference(i); |
| final String[] names = TextUtils.split(pref.getKey(), "/"); |
| final ComponentName componentName = new ComponentName(names[0], names[1]); |
| if (!mAvailableAgents.containsKey(componentName)) { |
| mScreen.removePreference(pref); |
| mActiveAgents.remove(componentName); |
| } |
| } |
| } |
| |
| @Override |
| public boolean onPreferenceChange(Preference preference, Object newValue) { |
| if (!(preference instanceof SwitchPreference)) { |
| return false; |
| } |
| for (TrustAgentInfo agent : mAvailableAgents.values()) { |
| final ComponentName componentName = agent.getComponentName(); |
| if (!TextUtils.equals(preference.getKey(), componentName.flattenToString())) { |
| continue; |
| } |
| if ((Boolean) newValue && !mActiveAgents.contains(componentName)) { |
| mActiveAgents.add(componentName); |
| } else { |
| mActiveAgents.remove(componentName); |
| } |
| saveActiveAgents(); |
| return true; |
| } |
| return false; |
| } |
| } |